what is CupSize?
Bra Cup Size
- A bra cup size is a vital aspect of determining the right fit for a woman's bra. It is used to indicate the size of a woman's breasts and is determined by measuring the difference between the fullest part of the bust and the band size (underbust measurement). This measurement is usually given in inches and the cup size is determined by the alphabetical letters (A, B, C, etc.).
- For example, a woman with a bust measurement of 35 inches and a band size of 32 inches would have a cup size of B (3 inches of difference). Similarly, a woman with a bust measurement of 38 inches and a band size of 34 inches would have a cup size of C (4 inches of difference).
- It is important to note that cup sizes are not absolute measurements and can vary between different brands and manufacturers. This is because different brands may use different methods to measure and calculate cup sizes. For example, one brand may consider a cup size B to be a difference of 3 inches, while another brand may consider it to be a difference of 3.5 inches.
- Furthermore, there are also international differences in cup sizes, which can make it difficult for women to find the right fit if they are shopping for bras online or in a different country.
- To find the right fit, it's important for women to try on different sizes and styles of bras and to be aware of the size conversion charts. Additionally, it's also important to note that the bra band should fit snugly around the rib cage and not ride up in the back. It's also important to ensure that the cups are filled out without any wrinkles or gaps. With the right fit, a bra can provide the support and comfort a woman needs.
How to Find Your Cup Size
- Measure your band size: To measure your band size, wrap a measuring tape around your rib cage, directly under your breasts. Make sure the tape is level and snug, but not too tight. Round to the nearest whole number.
- Measure your bust size: To measure your bust size, wrap the measuring tape around the fullest part of your bust. Again, make sure the tape is level and not too tight. Round to the nearest whole number.
- Determine your cup size: Subtract your band size measurement from your bust measurement. The difference will correspond to a cup size on a bra size chart. For example, if the difference is 1 inch, your cup size is "A," 2 inches is "B," and so on.
To find your cup size, you will need to measure the fullest part of your bust and your band size (underbust measurement). Once you have these measurements, you can use a bra size calculator or a bra size chart to determine your cup size.
Steps to Measure Your Bra Size
You can also use a bra size calculator which can be found on many websites. You have to put your measurements and the calculator will give you your bra size.
It's important to note that while measuring yourself at home can give you a general idea of your bra size, it is not always the most accurate. It's recommended to try on different styles and sizes of bras to find the perfect fit.


Bra Cup Size Faqs
A bra cup size refers to the measurement of a woman's breast tissue, typically measured in inches or centimeters. It is used to determine the appropriate size of a bra to provide proper support and fit.
To measure your bra cup size, you will need a measuring tape and a non-padded bra. First, measure around the fullest part of your bust, making sure the tape measure is level and not too tight. Then, subtract your band measurement from your bust measurement to determine your cup size. Each inch of difference corresponds to a cup size (e.g. 1 inch = A cup, 2 inches = B cup, etc.).
If your cup size is not available in your band size, you can try going up or down a band size and adjusting the straps to get the right fit. Alternatively, you can try a different style of bra or a brand that may offer your size.
Yes, it is normal for a woman's cup size to change due to factors such as weight gain or loss, pregnancy, and hormonal changes. It is important to regularly check and adjust your bra size to ensure proper fit and support.
Yes, cup sizes can vary between different brands and styles of bras. It is recommended to check the brand's size chart before purchasing or try on different sizes to find the best fit.
It is not recommended to wear a bra with a smaller cup size as it can lead to discomfort and lack of support. It is important to find a bra that fits properly and provides the right amount of support regardless of breast size.